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Finding the Fourth Proportional to 370,551.31, 511,163.60 and 225,401.47

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Solution

The fourth proportional to 370,551.31, 511,163.60 and 225,401.47 is: 310,934.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,551.31 : 511,163.60 = 225,401.47 : x
  2. Step 2: Convert to fraction form
    370,551.31/511,163.60 = 225,401.47/x
  3. Step 3: Cross multiply
    370,551.31x = 511,163.60 × 225,401.47
  4. Step 4: Simplify right side
    370,551.31x = 115,217,024,445.58
  5. Step 5: Solve for x
    x = 115,217,024,445.58/370,551.31
  6. Step 6: Final answer
    x = 310,934.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.